what do u think of these tubes?

[buliwyf]

are they any good for guitar amps?

National 12AX7 (Japan)
National 12AX7 (Yugoslavia) - store claims it to be NOS

Toshiba EL84 (Japan)

How do these tubes compare to other brands?

I noticed that the most popular tubes for my type of guitar amp (vox ac30 clone) are Electro-Harmonix 12ax7 and JJ/Tesla EL84's.

Currently, im using Ruby 12ax7's and Sovtek EL84's

 

[TonyTecson]

hi,

may i know what store you get them from?

thanks

 

[buliwyf]

hi,

may i know what store you get them from?

thanks

hello. that store in parksquare 1, i forgot the name. they also got a matched quad of mullard el34's

 

[dsavitsk]

they also got a matched quad of mullard el34's

Be careful with a matched set of mullard el34's. There are new production tubes that carry that moniker: http://www.tubedepot.com/mu-el34.html

 

[SHiFTY]

are they any good for guitar amps?

Japanese tubes are very well rated, and seem to be almost as good as the British and American ones. They will probably be fine at normal ratings, although I wouldn't run any tube beyond it's ratings.

Yugo ones might be a bit more of a lucky dip...